Apparatus for making emulsions



Jan. 20, 1931. M. G. GREGG 1,789,897

APPARATUS FOR MAKING EMULSIONS Original Filed June 19. 1922 2 Sheets-Sheet l Jan. 20, 1931. M. G. GREGG 1,789,897

APPARATUS FOR MAKING EMULSIONS Original Filed June 19. 1922' 2 Sheets-Sheet 2 (IIIIIIIIIIIIIIIIIIIII,IIIIIIIIIIIIIIIA \xda-mwy/d 1' f Id? 11655 Jimmy/e7? 6 671299 .7770??? for":

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Patented Jan. 20, 1931 UNITED STATES PATENT OFFICE MAXWELL G. GREGG, O1 RIDGEFIELD-PARK, NEW JERSEY, ASSIGNOR TO THEFLINT- KOTE COMPANY,' OF

BETTE BOSTON, MASSACHUSETTS, A CORPORATION OI MASSACHU- arranar'os ron MAKING nMuLsmNs Application filed June 19, 1922, Serial No. 569,467. Renewed July 27, 1829.

' larly ada ted to making emulsions of heavy resents a relief cushion for steam or va generated mslde the conduit, said cus ion subjected to heat and pressure.

-' vided with stufiin hydrocar n oils or asphalts by combining same. with water and a suitable emulsifying agent.

Among the salient objects of the invention are to provide an apparatus whereby emulsions may be formed continuously of two or more materials either under substantial pressure or at atmospheric pressure; to provide an apparatus which under pressure, in-

creases the boiling point of heavy viscous materials and rmits elevated temperature to be used wit out evaporation; to provide an apparatus which is so constructed that it is economical and at the same time is capable of'a maximum eihciency; to provide an apparatus in which emulsions can be made continuously, and in which the materials used in making the emulsion are continuously circulated and mixed, at the same time being In the drawings: Fig. 1 is a side elevational view of the apparatus.

Fig. 2 is a plan view of the same.

Referring in detail to the drawings, the conduit 1, preferably of common wrought iron pipe so arranged as to form a continuous circulating tube is provided with shafts 2 and 3. Mounted u on these shafts are pro ellers 4 and 5, an where the shafts exten outside of the conduit, they are proboxes 6. The shafts are provided with pa leys 7 or connected with any known means for rotatin same. 8 represents a cover or manhole p ate which can be removed to permit the circulating tube to be charged. 9 and 10 represent inlets to the conduit and 11 represents an outlet. It may be noted here that more inlets or outlets may be employed if necessary. 12 repeing provided with pressure gauge 13 and valve 14, which is referably a loaded or automatic valve, which latter is used to regulate the pressure inside the system. Outlet 11 is provided with a valve 15 and. inlets 9 and 10 are provided with valves 16 and 17.

The conduit may be rovided with external heating apparatus or urners 18 for the purpose of heating the material inside the conduit. The entire apparatus may be mounted on the standards or uprights 19.

One methodof operation of the apparatus may be as follows: The conduit 1, through the cover 8, is char ed with a heavy viscous mixture of colloidaclay as an emulsifying agent and water. The shafts 2 and 3 are set in motion so thatthe propellers 4 and 5 are working in a direction to produce a circulation of said material around the conduit 1'. The material to be mixed is brought to the desired temperature\ by the application of heat as .shown in the drawings. When the clay and water mixture is of the proper consistency, inlet valve ,16 on inlet 9, which in this instance, is used .forthe inlet of asphalt, is opened, and this asphalt, having been preheated so that it will flow freely, is admitted into the conduit 1 and immediately mixed with the material in the conduit. lVhen the desired temperature and pressure is reached, valve 15 on the outlet 11 is opened to allow is being fed to the apparatus through the in let 9. When the proper percentage of asphalt is mixed with the original charge of i the conduit 1 which may be anywhere from 99% down, the inlet valve 17 is opened to allow a continuous flow of the emulsifying agent, which is, in this instance, colloidal clay mixed with water,and the outlet valve 15 opened that much more.

As the materials enter through the inlet valves, they are immediately taken up by the circulation through the conduit and formed into a permanent emulsion and the finished emulsion is drawn from the outlet 11. As a feature of my invention, it will be noted that the apparatus ma be operated under pressure desired, there y permitting the use of high melting point asphalts having a boiling lpoint of 250 to 400 degrees F., or more, in t at the proper amount of pressure being exerted naturally increases the boiling point of the contents of the mixer so that a the same amount of materialto pass out as temperature in excess of the boiling points of the materials at atmospheric pressure, may be used without evaporation or distillation of said materials. This will produce the proper viscosity fonmixing.

It is to be unde that this apparatus is not limited to the use of any one emulsiizing agent such as colloidal clay, but may e used for emulsions of heavy vegetable compounds, resins, rubber, or high melting point materials other than asphalts.

I claim as my invention 1. A mixer for making emulsions, comprising freely communicating parallel conduits spaced from each otherand connected by curved return bends, said conduits and return bends being disposed in a substantially horizontal plane, means for introducing regulated quantities of raw material to the conduits, means for withdrawing regulated amounts of the resultant mixture from the conduits, and means for agitating and maintaining a cyclic circulation of the materials being mixed to, through and from each con duit comprising rotatable agitators disposed in each conduit.

2. A mixer for making emulsions comgrising freely communicating parallel conuits spaced from each other and disposed in a substantially horizontal plane, means for introducing regulated quantities of raw material to the conduits, means for Withdrawing regulated amounts of the resultant mixture from the conduits, and means for agitating and maintaining a cyclic circulation of the materials being mixed to, through and from each conduit, comprising rotatable agitators disposed in each conduit.

3. A. mixer for making emulsions comprising freel communicating parallel conduits spaced in each other and disposed in a substantially horizontal plane, means for introducing regulated quantities of raw material to the conduits, means for withdrawing regulated amounts of the resultant mixture from the conduits, and means for agitating and maintaining a cyclic circulaton of the materials being mixed to, th'rou h and from each conduit, comprising rotata le agitators disposed in each conduit, and us for maintaining superatmospheric pressure on the mixer.

4. A mixer formaking emulsions comprising freely communicating conduits spaced from each other and disposed in a substantially horizontal. plane forming a circuit, means for introducing regulated quantities of raw material to the circult, means for withdrawing regulated amounts of the resultant mixture from the circuit, and means for agitating and maintaining a cyclic circulation of, the materials being mixed tofthrou h and from each conduit, comprising. rotatable each conduit.

agitators disposed in LL GI'GREGG. 

